【摘要】 采用无皂乳液聚合法合成了丙烯酰胺单体质量分数(f)为0.40~0.73的丙烯酰胺-苯乙烯共聚物乳液(固含量为40%),并通过Hof-mann反应将乳液改性为阳离子型聚丙烯酰胺乳液。f为0.73的共聚物乳液的Hofmann反应产物中,胶粒的数均直径为85 nm,胺基和羧基的转化率分别为69.5%和6.4%。更多还原

【Abstract】 The copolymers of acrylamide and styrene were prepared by emulsifier-free copolymerization.The mass fraction of acrylamide in the copolymer was 0.40～0.73.The emulsion was modified into cationic polymer by Hofmann reaction.The diameter of the microparticles in the emulsion with the mass fraction of 0.73 was 85 nm,conversion yields of amino groups and carboxyl groups were 69.5% and 6.4%,respectively.更多还原